Category Archives: News

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Participation in the Lignomad congress19

Category : News

The GPA GIR has participated, together with the GIR of Structures and Technology of the Wood of the University of Valladolid, in the congress Lignomad19, celebrated in Santiago de Compostela between the 1 and the 3 of July of 2019


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GPA develops a MEMS accelerometer

Category : News

As a consequence of the collaboration with the GIR group of Structures and Technologies of the Wood of the UVA, a low-cost MEMS accelerometer has been developed to measure the resonance frequencies of wooden beams in heritage environments.


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GPA Integrates a MEMS acoustic array in a drone for rescue applications

Category : News

Integration on a Drontecnic DT6P platform of a MEMS 4×4 acoustic array with a myRIO processing system


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New acoustics MEMS arrays Project

Category : News

Last March we designed two new Acoustic Array boards. Each board has 16 Mems microphones with a circular and square geometry respectively.


Visita al Departamento de Ingeniería Mecánica de la Universidad Tecnológica de Eindhoven

Category : News

En enero de  2018, la doctora Lara del Val realizó una visita al Departamento de Ingeniería Mecánica de la Universidad Tecnológica de Eindhoven, invitada por Inés López Arteaga, profesora catedrática de dicho departamento, así como profesora catedrática a tiempo parcial en el Real Instituto Tecnológico (KTH) de Estocolmo, dentro del Laboratorio Marcus Wallenberg para la investigación en Acústica y Vibraciones. En dicha visita, amparada por el programa de ayudas de movilidad del Erasmus +, Lara del Val impartío una charla sobre Beamforming, dentro del Curso “Coupled Problems: Vibro Acoustic”, a alumnos de Postgrado. Y dicha visita sentó las bases para un trabajo conjunto en relación al uso de técnicas de machine learning, en las que Lara del Val tiene experiencia, para la detección de fallos en placas vibrantes, a partir de imágenes acústicas obtenidas con arrays de micrófonos


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Stay at Vrije Universitetit Brussel (VUB)

Category : News

Professor Alberto Izquierdo Fuente has made a training stay in the ETRO group of the Department of Industry Sciences (INDI) of the Free University of Brussels (VUB) (Belgium). He has worked with Prof. Abdellah Touhafi in the area of ​​acoustic arrays with embedded systems based on reconfigurable FPGA.

 

 


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Using a Planar Array of MEMS Microphones to Obtain Acoustic Images of a Fan Matrix

Category : News

This paper proposes the use of a signal acquisition and processing system based on an 8X8 planar array of MEMS (Microelectromechanical Systems) microphones to obtain acoustic images of a fan matrix. A 3X3 matrix of PC fans has been implemented to perform the study. Some tests to obtain the acoustic images of the individual fans and of the whole matrix have been defined and have been carried out inside an anechoic chamber. The nonstationary signals received by each MEMS microphone and their corresponding spectra have been analyzed, as well as the corresponding acoustic images. The analysis of the acoustic signals spectra reveals the resonance frequency of the individual fans. The obtained results reveal the feasibility of the proposed system to obtained acoustic images of a fan matrix and of its individual fans, in this last case, in order to estimate the real position of the fan inside the matrix.

See full story: Using a Planar Array of MEMS Microphones to Obtain Acoustic Images of a Fan Matrix


Guest Lecturer at Carnegie Mellon University

Category : News

Prof Alberto Izquierdo has made a 1-month stay as a visiting professor with Prof Jose Moura of Carnegie Mellon University (Pittsburg-USA). July 2017